From: "Clément Péron" <peron.clem@gmail.com>
To: Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Rob Herring <robh+dt@kernel.org>, Mark Brown <broonie@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>
Cc: "Jaroslav Kysela" <perex@perex.cz>,
"Takashi Iwai" <tiwai@suse.com>,
"Marcus Cooper" <codekipper@gmail.com>,
"Jernej Skrabec" <jernej.skrabec@siol.net>,
alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com,
"Clément Péron" <peron.clem@gmail.com>
Subject: [PATCH v6 03/14] ASoC: sun4i-i2s: Change get_sr() and get_wss() to be more explicit
Date: Sat, 3 Oct 2020 16:19:39 +0200 [thread overview]
Message-ID: <20201003141950.455829-4-peron.clem@gmail.com> (raw)
In-Reply-To: <20201003141950.455829-1-peron.clem@gmail.com>
We are actually using a complex formula to just return a bunch of
simple values. Also this formula is wrong for sun4i when calling
get_wss() the function return 4 instead of 3.
Replace this with a simpler switch case.
Also drop the i2s params which is unused and return a simple int as
returning an error code could be out of range for an s8 and there is
no optim to return a s8 here.
Fixes: 619c15f7fac9 ("ASoC: sun4i-i2s: Change SR and WSS computation")
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
---
sound/soc/sunxi/sun4i-i2s.c | 69 +++++++++++++++++++++++--------------
1 file changed, 44 insertions(+), 25 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 1f577dbc20a6..8e497fb3de09 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -175,8 +175,8 @@ struct sun4i_i2s_quirks {
unsigned int num_mclk_dividers;
unsigned long (*get_bclk_parent_rate)(const struct sun4i_i2s *);
- s8 (*get_sr)(const struct sun4i_i2s *, int);
- s8 (*get_wss)(const struct sun4i_i2s *, int);
+ int (*get_sr)(unsigned int width);
+ int (*get_wss)(unsigned int width);
int (*set_chan_cfg)(const struct sun4i_i2s *i2s,
unsigned int channels, unsigned int slots,
unsigned int slot_width);
@@ -381,37 +381,56 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
return 0;
}
-static s8 sun4i_i2s_get_sr(const struct sun4i_i2s *i2s, int width)
+static int sun4i_i2s_get_sr(unsigned int width)
{
- if (width < 16 || width > 24)
- return -EINVAL;
-
- if (width % 4)
- return -EINVAL;
+ switch (width) {
+ case 16:
+ return 0x0;
+ case 20:
+ return 0x1;
+ case 24:
+ return 0x2;
+ }
- return (width - 16) / 4;
+ return -EINVAL;
}
-static s8 sun4i_i2s_get_wss(const struct sun4i_i2s *i2s, int width)
+static int sun4i_i2s_get_wss(unsigned int width)
{
- if (width < 16 || width > 32)
- return -EINVAL;
-
- if (width % 4)
- return -EINVAL;
+ switch (width) {
+ case 16:
+ return 0x0;
+ case 20:
+ return 0x1;
+ case 24:
+ return 0x2;
+ case 32:
+ return 0x3;
+ }
- return (width - 16) / 4;
+ return -EINVAL;
}
-static s8 sun8i_i2s_get_sr_wss(const struct sun4i_i2s *i2s, int width)
+static int sun8i_i2s_get_sr_wss(unsigned int width)
{
- if (width % 4)
- return -EINVAL;
-
- if (width < 8 || width > 32)
- return -EINVAL;
+ switch (width) {
+ case 8:
+ return 0x1;
+ case 12:
+ return 0x2;
+ case 16:
+ return 0x3;
+ case 20:
+ return 0x4;
+ case 24:
+ return 0x5;
+ case 28:
+ return 0x6;
+ case 32:
+ return 0x7;
+ }
- return (width - 8) / 4 + 1;
+ return -EINVAL;
}
static int sun4i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s,
@@ -574,11 +593,11 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
}
i2s->playback_dma_data.addr_width = width;
- sr = i2s->variant->get_sr(i2s, word_size);
+ sr = i2s->variant->get_sr(word_size);
if (sr < 0)
return -EINVAL;
- wss = i2s->variant->get_wss(i2s, slot_width);
+ wss = i2s->variant->get_wss(slot_width);
if (wss < 0)
return -EINVAL;
--
2.25.1
next prev parent reply other threads:[~2020-10-03 14:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-03 14:19 [PATCH v6 00/14] Add Allwinner H3/H5/H6/A64 HDMI audio Clément Péron
2020-10-03 14:19 ` [PATCH v6 01/14] ASoC: sun4i-i2s: Add support for H6 I2S Clément Péron
2020-10-03 14:19 ` [PATCH v6 02/14] ASoC: sun4i-i2s: Change set_chan_cfg() params Clément Péron
2020-10-05 12:13 ` Maxime Ripard
2020-10-05 13:23 ` Clément Péron
2020-10-12 12:15 ` Maxime Ripard
2020-10-13 1:15 ` Samuel Holland
2020-10-19 10:24 ` Maxime Ripard
2020-10-06 5:03 ` Samuel Holland
2020-10-12 12:20 ` Maxime Ripard
2020-10-03 14:19 ` Clément Péron [this message]
2020-10-05 12:14 ` [PATCH v6 03/14] ASoC: sun4i-i2s: Change get_sr() and get_wss() to be more explicit Maxime Ripard
2020-10-05 13:35 ` Clément Péron
2020-10-03 14:19 ` [PATCH v6 04/14] ASoC: sun4i-i2s: Set sign extend sample Clément Péron
2020-10-03 14:19 ` [PATCH v6 05/14] ASoc: sun4i-i2s: Add 20 and 24 bit support Clément Péron
2020-10-03 14:19 ` [PATCH v6 06/14] ASoC: sun4i-i2s: Fix sun8i volatile regs Clément Péron
2020-10-03 14:19 ` [PATCH v6 07/14] ASoC: sun4i-i2s: Fix setting of FIFO modes Clément Péron
2020-10-03 14:19 ` [PATCH v6 08/14] ASoC: sun4i-i2s: fix coding-style for callback definition Clément Péron
2020-10-05 12:14 ` Maxime Ripard
2020-10-03 14:19 ` [PATCH v6 09/14] dt-bindings: ASoC: sun4i-i2s: Add H6 compatible Clément Péron
2020-10-03 14:19 ` [PATCH v6 10/14] arm64: dts: allwinner: h6: Add I2S1 node Clément Péron
2020-10-03 14:19 ` [PATCH v6 11/14] arm64: dts: allwinner: a64: Add I2S2 node Clément Péron
2020-10-03 14:19 ` [PATCH v6 12/14] arm64: defconfig: Enable Allwinner i2s driver Clément Péron
2020-10-03 14:19 ` [PATCH v6 13/14] dt-bindings: sound: sun4i-i2s: Document H3 with missing RX channel possibility Clément Péron
2020-10-06 21:11 ` Rob Herring
2020-10-03 14:19 ` [PATCH v6 14/14] arm: dts: sunxi: h3/h5: Add I2S2 node Clément Péron
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